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1. (WO2018098564) MOLD STACK FOR A PREFORM

Pub. No.:    WO/2018/098564    International Application No.:    PCT/CA2017/051341
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Sat Nov 11 00:59:59 CET 2017
IPC: B29C 45/26
B29B 11/08
Applicants: HUSKY INJECTION MOLDING SYSTEMS LTD.
Inventors: WITZ, Jean- Christophe
KMOCH, Sven
FISCH, Ralf Walter
BRISTIEL, Dimitri
BECK, Christophe Simon Pierre
MCCREADY, Derek Robertson
PAPA, Renato
DALLE, Pierre-Jean Baptiste Vianney
Title: MOLD STACK FOR A PREFORM
Abstract:
A mold stack (1) is provided for molding a preform (2) with a radial flange (23) for forming a container, for example a beverage can, having a lid (28). The mold stack (1) includes a plurality of mold inserts (3, 4, 5, 6) core insert (3), a stripper ring (4), a cavity insert (5) and a gate insert (6), which are configured to cooperate when positioned in a molding configuration to define a molding cavity (7) for molding the preform (2) therein. The mold stack (1) includes a plurality of split lines (13, 14) defined between the mold inserts (3, 4, 5, 6) to accommodate relative movement thereof such that they are displaceable relative one another towards a stripping configuration to effect removal of the preform (2). The molding cavity (7) includes a flange portion (40a) for molding the radial flange (23), which is defined between the stripper ring (4) and the cavity insert (5). The cavity-stripper split line (13) defined between the stripper ring (4) and the cavity insert (5) extends from the flange portion (40a) of the molding cavity (7) in a direction substantially orthogonal thereto.